Slave flash question

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RC cola

Senior Member
Back in the film days I had a Minolta X700 and I often used these slave flash units that screw into a standard light socket. They worked great just being triggered from a flash on the camera that I would divert the light to stay out of the frame or by using one unit with a sync socket triggered from an old remote control car transmitter I customized to be a remote trigger source.

I have a Canon point and shoot digital that I tried using the slave flashes with I have and noticed it would not sync to the shutter from being trigger by the camera flash.

I recent got a D5100 and tried to use the slaves again having the same result, the flash from the slave does not appear in the image. Is there some setting that might correct this condition? I do like these slave units for some stuff I like to shoot.
 
LouCioccio

LouCioccio

Senior Member
Its possible a pre-flash is triggering it, I am assuming these are optical fired slaves. Also try a lower shutter speed like 1/60th and see what happens.

Ciao,
Lou Cioccio
 
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RC cola

Senior Member
I did try it at 1/60th since that was a normal shutter speed sync speed with film SLR's as well as slower speeds. Ive read a few other post about the TTL metering preflash condition and thats causing the slave to fire before the shutter opens.
 
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Rexer John

Senior Member
Front curtain is when the shutter opens.
Rear curtain is when it closes.

So rear curtain sync means the flash fires just before the curtain/shutter closes.
 
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